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vazorg [7]
3 years ago
14

The combination of all forces that act on an object are (2 points)

Physics
1 answer:
qaws [65]3 years ago
5 0

Answer:

A) The net force

Explanation:

If two forces of equal strength act on an object in opposite directions, the forces will cancel, resulting in a net force of zero and no movement.

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A weightlifter lifts a 1250-N barbell 2 m in 3 s.How much power was used to lift the barbell?
Vlad [161]

The power is 833.3 W

Explanation:

First of all, we need to calculate the work done in lifting the barbell, which is equal to the change in gravitational potential energy of the barbell:

W=(mg)h

where

mg = 1250 N is the weight of the barbell

h = 2 m is the change in height

Substituting,

W=(1250)(2)=2500 J

Now we can calculate the power, which is equal to the work done per unit time:

P=\frac{W}{t}

where

W = 2500 J is the work done

t = 3 s is the time taken

Substituting,

P=\frac{2500}{3}=833.3 W

Learn more about power:

brainly.com/question/7956557

#LearnwithBrainly

5 0
3 years ago
Why does a green leaf look green in our eyes
mamaluj [8]
They look green because of the “special pair” of chlorophyll molecules.
3 0
3 years ago
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Imagine that two charged balls placed some distance apart strongly attract each other. Now imagine placing a pane of glass halfw
lorasvet [3.4K]

Answer:

decrease

Explanation:

If the two charged ball attracts each other, it means the charge on both the balls are opposite in nature.

As, we insert a glass slab, it means a dielectric is inserted in between the charges. The force between them is reduced.

8 0
4 years ago
What should Miguel do first and why? What type of healthcare professional will respond to the call?
Sergeeva-Olga [200]

Answer:

  1. Miguel should hand the phone over to a medical personnel.
  2. A nurse or a physician will respond to the call

Explanation:

From chapter 2 of the book: Medical Assisting: Administrative Skills, Miguel Perez is an administrative assistant. The duties of an administrative assistant in an healthcare professional setting range from performing medical clerical services like keeping patient's files organized, scheduling appointments and answering calls.

So, when a patient has medical concerns and calls the doctor's office, Miguel should answer the phone, know the patient's concerns, put the patient on hold and hand the phone over to a medical personnel - either a nurse or a physician. This is because Miguel is not a trained healthcare professional and cannot offer medical advice or assistance.

4 0
3 years ago
What is the current in a 50.0 meter long wire that is in a magnetic field of 0.15 T and has
Andrews [41]

Answer:

d 200 I'm 50 50 on it though

7 0
2 years ago
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